Window regulator

Abstract

A window regulator includes a carrier. The carrier includes a holding section and is capable slide along a guide rail with the holding section slidably contacting on the guide rail. The carrier supports a window panel. A brake mechanism is provided on the carrier. The brake mechanism prevents the window panel (the carrier) from self-weight drop by slidably contacting onto the guide rail by an urging force thereof. According to the window regulator, good down operations of the window panel can be maintained even if a slidably contacting portion(s) of the holding section that holds the guide rail becomes worn.

1. A window regulator, comprising:
 a guide rail extending vertically; 
 a carrier for supporting a window panel, the carrier including a holding section in constant slidable contact with the guide rail and configured to slide along the guide rail; 
 a drive unit connected with the carrier by a wire and configured to move the carrier along the guide rail by drawing the wire; and 
 a brake mechanism provided on the carrier and configured to prevent the window panel from dropping under its own weight, the brake mechanism comprising:
 a brake shoe in constant slidable contact with one side surface of the guide rail, and 
 a first urging member pressing the brake shoe onto said one side surface of the guide rail to maintain the constant slidable contact of the brake shoe with the side surface of the guide rail, and 
 
 the holding section comprising
 a side block that in constant slidable contact with another side of the guide rail so that the brake shoe and the side block constantly slidably hold the guide rail therebetween. 
 
 
     
     
       2. The window regulator according to  claim 1 , wherein
 the first urging member is a leaf spring that includes two pressing sections each pressing the brake shoe. 
 
     
     
       3. A window regulator, comprising:
 a guide rail extending vertically; 
 a carrier for supporting a window panel, the carrier including a holding section in constant slidable contact with the guide rail and capable of sliding along the guide rail; 
 a drive unit that 
 includes a rotor drum connected with the carrier by an up-wire and a down-wire and 
 is capable of (i) moving the carrier upward along the guide rail by winding up the up-wire around the rotor drum and feeding out the down-wire from the rotor drum or (ii) moving the carrier downward along the guide rail by winding up the down-wire around the rotor drum and feeding out the up-wire from the rotor drum, and 
 an anti-loose mechanism that is provided on a string path of the up-wire between the drive unit and the carrier, the anti-loose mechanism holding the up-wire to prevent the up-wire from coming loose at a section between a held point of the up-wire and the carrier. 
 
     
     
       4. The window regulator according to  claim 3 , wherein
 the anti-loose mechanism includes 
 a second urging member, and 
 a pair of holding members holding the up-wire therebetween by an urging force of the second urging member.